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使用Arthas神器,定位解决SpringBoot接口超时问题(附诊断流程)
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来源:segmentfault.com/a/1190000020383866
# 背景
# 定位过程
分析代码
分析调用流程
[jboss@VM_0_139_centos ~]$ ping 10.0.0.139
PING 10.0.0.139 (10.0.0.139) 56(84) bytes of data.
64 bytes from 10.0.0.139: icmp_seq=1 ttl=64 time=0.029 ms
64 bytes from 10.0.0.139: icmp_seq=2 ttl=64 time=0.041 ms
64 bytes from 10.0.0.139: icmp_seq=3 ttl=64 time=0.040 ms
64 bytes from 10.0.0.139: icmp_seq=4 ttl=64 time=0.040 ms
# 由于日志是没问题的,这里直接复制上面日志了
[jboss@VM_0_139_centos ~]$ ping 10.0.0.139
PING 10.0.0.139 (10.0.0.139) 56(84) bytes of data.
64 bytes from 10.0.0.139: icmp_seq=1 ttl=64 time=0.029 ms
64 bytes from 10.0.0.139: icmp_seq=2 ttl=64 time=0.041 ms
64 bytes from 10.0.0.139: icmp_seq=3 ttl=64 time=0.040 ms
64 bytes from 10.0.0.139: icmp_seq=4 ttl=64 time=0.040 ms
[jboss@VM_10_91_centos tmp]$ curl -w "@curl-time.txt" http://127.0.0.1:7744/send
success
http: 200
dns: 0.001s
redirect: 0.000s
time_connect: 0.001s
time_appconnect: 0.000s
time_pretransfer: 0.001s
time_starttransfer: 0.073s
size_download: 7bytes
speed_download: 95.000B/s
----------
time_total: 0.073s 请求总耗时
[jboss@VM_10_91_centos tmp]$ curl -w "@curl-time.txt" http://127.0.0.1:7744/send
success
http: 200
dns: 0.001s
redirect: 0.000s
time_connect: 0.001s
time_appconnect: 0.000s
time_pretransfer: 0.001s
time_starttransfer: 0.003s
size_download: 7bytes
speed_download: 2611.000B/s
----------
time_total: 0.003s
# Arthas分析问题
这个类从哪个 jar 包加载的?为什么会报各种类相关的 Exception? 我改的代码为什么没有执行到?难道是我没 commit?分支搞错了? 遇到问题无法在线上 debug,难道只能通过加日志再重新发布吗? 线上遇到某个用户的数据处理有问题,但线上同样无法 debug,线下无法重现! 是否有一个全局视角来查看系统的运行状况? 有什么办法可以监控到JVM的实时运行状态?
trace 方法内部调用路径,并输出方法路径上的每个节点上耗时 trace 命令能主动搜索 class-pattern/method-pattern 对应的方法调用路径,渲染和统计整个调用链路上的所有性能开销和追踪调用链路。
[arthas@24851]$ trace org.springframework.web.servlet.DispatcherServlet *
Press Q or Ctrl+C to abort.
Affect(class-cnt:1 , method-cnt:44) cost in 508 ms.
`---ts=2019-09-14 21:07:44;thread_name=http-nio-7744-exec-2;id=11;is_daemon=true;priority=5;TCCL=org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader@7c136917
`---[2.952142ms] org.springframework.web.servlet.DispatcherServlet:buildLocaleContext()
`---ts=2019-09-14 21:07:44;thread_name=http-nio-7744-exec-2;id=11;is_daemon=true;priority=5;TCCL=org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader@7c136917
`---[18.08903ms] org.springframework.web.servlet.DispatcherServlet:doService()
+---[0.041346ms] org.apache.commons.logging.Log:isDebugEnabled() #889
+---[0.022398ms] org.springframework.web.util.WebUtils:isIncludeRequest() #898
+---[0.014904ms] org.springframework.web.servlet.DispatcherServlet:getWebApplicationContext() #910
+---[1.071879ms] javax.servlet.http.HttpServletRequest:setAttribute() #910
+---[0.020977ms] javax.servlet.http.HttpServletRequest:setAttribute() #911
+---[0.017073ms] javax.servlet.http.HttpServletRequest:setAttribute() #912
+---[0.218277ms] org.springframework.web.servlet.DispatcherServlet:getThemeSource() #913
| `---[0.137568ms] org.springframework.web.servlet.DispatcherServlet:getThemeSource()
| `---[min=0.00783ms,max=0.014251ms,total=0.022081ms,count=2] org.springframework.web.servlet.DispatcherServlet:getWebApplicationContext() #782
+---[0.019363ms] javax.servlet.http.HttpServletRequest:setAttribute() #913
+---[0.070694ms] org.springframework.web.servlet.FlashMapManager:retrieveAndUpdate() #916
+---[0.01839ms] org.springframework.web.servlet.FlashMap:<init>() #920
+---[0.016943ms] javax.servlet.http.HttpServletRequest:setAttribute() #920
+---[0.015268ms] javax.servlet.http.HttpServletRequest:setAttribute() #921
+---[15.050124ms] org.springframework.web.servlet.DispatcherServlet:doDispatch() #925
| `---[14.943477ms] org.springframework.web.servlet.DispatcherServlet:doDispatch()
| +---[0.019135ms] org.springframework.web.context.request.async.WebAsyncUtils:getAsyncManager() #953
| +---[2.108373ms] org.springframework.web.servlet.DispatcherServlet:checkMultipart() #960
| | `---[2.004436ms] org.springframework.web.servlet.DispatcherServlet:checkMultipart()
| | `---[1.890845ms] org.springframework.web.multipart.MultipartResolver:isMultipart() #1117
| +---[2.054361ms] org.springframework.web.servlet.DispatcherServlet:getHandler() #964
| | `---[1.961963ms] org.springframework.web.servlet.DispatcherServlet:getHandler()
| | +---[0.02051ms] java.util.List:iterator() #1183
| | +---[min=0.003805ms,max=0.009641ms,total=0.013446ms,count=2] java.util.Iterator:hasNext() #1183
| | +---[min=0.003181ms,max=0.009751ms,total=0.012932ms,count=2] java.util.Iterator:next() #1183
| | +---[min=0.005841ms,max=0.015308ms,total=0.021149ms,count=2] org.apache.commons.logging.Log:isTraceEnabled() #1184
| | `---[min=0.474739ms,max=1.19145ms,total=1.666189ms,count=2] org.springframework.web.servlet.HandlerMapping:getHandler() #1188
| +---[0.013071ms] org.springframework.web.servlet.HandlerExecutionChain:getHandler() #971
| +---[0.372236ms] org.springframework.web.servlet.DispatcherServlet:getHandlerAdapter() #971
| | `---[0.280073ms] org.springframework.web.servlet.DispatcherServlet:getHandlerAdapter()
| | +---[0.004804ms] java.util.List:iterator() #1224
| | +---[0.003668ms] java.util.Iterator:hasNext() #1224
| | +---[0.003038ms] java.util.Iterator:next() #1224
| | +---[0.006451ms] org.apache.commons.logging.Log:isTraceEnabled() #1225
| | `---[0.012683ms] org.springframework.web.servlet.HandlerAdapter:supports() #1228
| +---[0.012848ms] javax.servlet.http.HttpServletRequest:getMethod() #974
| +---[0.013132ms] java.lang.String:equals() #975
| +---[0.003025ms] org.springframework.web.servlet.HandlerExecutionChain:getHandler() #977
| +---[0.008095ms] org.springframework.web.servlet.HandlerAdapter:getLastModified() #977
| +---[0.006596ms] org.apache.commons.logging.Log:isDebugEnabled() #978
| +---[0.018024ms] org.springframework.web.context.request.ServletWebRequest:<init>() #981
| +---[0.017869ms] org.springframework.web.context.request.ServletWebRequest:checkNotModified() #981
| +---[0.038542ms] org.springframework.web.servlet.HandlerExecutionChain:applyPreHandle() #986
| +---[0.00431ms] org.springframework.web.servlet.HandlerExecutionChain:getHandler() #991
| +---[4.248493ms] org.springframework.web.servlet.HandlerAdapter:handle() #991
| +---[0.014805ms] org.springframework.web.context.request.async.WebAsyncManager:isConcurrentHandlingStarted() #993
| +---[1.444994ms] org.springframework.web.servlet.DispatcherServlet:applyDefaultViewName() #997
| | `---[0.067631ms] org.springframework.web.servlet.DispatcherServlet:applyDefaultViewName()
| +---[0.012027ms] org.springframework.web.servlet.HandlerExecutionChain:applyPostHandle() #998
| +---[0.373997ms] org.springframework.web.servlet.DispatcherServlet:processDispatchResult() #1008
| | `---[0.197004ms] org.springframework.web.servlet.DispatcherServlet:processDispatchResult()
| | +---[0.007074ms] org.apache.commons.logging.Log:isDebugEnabled() #1075
| | +---[0.005467ms] org.springframework.web.context.request.async.WebAsyncUtils:getAsyncManager() #1081
| | +---[0.004054ms] org.springframework.web.context.request.async.WebAsyncManager:isConcurrentHandlingStarted() #1081
| | `---[0.011988ms] org.springframework.web.servlet.HandlerExecutionChain:triggerAfterCompletion() #1087
| `---[0.004015ms] org.springframework.web.context.request.async.WebAsyncManager:isConcurrentHandlingStarted() #1018
+---[0.005055ms] org.springframework.web.context.request.async.WebAsyncUtils:getAsyncManager() #928
`---[0.003422ms] org.springframework.web.context.request.async.WebAsyncManager:isConcurrentHandlingStarted() #928
[jboss@VM_10_91_centos tmp]$ curl -w "@curl-time.txt" http://127.0.0.1:7744/send
success
http: 200
dns: 0.001s
redirect: 0.000s
time_connect: 0.001s
time_appconnect: 0.000s
time_pretransfer: 0.001s
time_starttransfer: 0.115s
size_download: 7bytes
speed_download: 60.000B/s
----------
time_total: 0.115s
stack 输出当前方法被调用的调用路径 很多时候我们都知道一个方法被执行,但这个方法被执行的路径非常多,或者你根本就不知道这个方法是从那里被执行了,此时你需要的是 stack 命令。
[arthas@24851]$ stack org.springframework.web.servlet.DispatcherServlet *
Press Q or Ctrl+C to abort.
Affect(class-cnt:1 , method-cnt:44) cost in 495 ms.
ts=2019-09-14 21:15:19;thread_name=http-nio-7744-exec-5;id=14;is_daemon=true;priority=5;TCCL=org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader@7c136917
@org.springframework.web.servlet.FrameworkServlet.processRequest()
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:866)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:851)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:109)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1468)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
ts=2019-09-14 21:15:19;thread_name=http-nio-7744-exec-5;id=14;is_daemon=true;priority=5;TCCL=org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader@7c136917
@org.springframework.web.servlet.DispatcherServlet.doService()
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:974)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:866)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:851)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:109)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1468)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
[arthas@24851]$ trace org.apache.coyote.http11.Http11Processor service
Press Q or Ctrl+C to abort.
Affect(class-cnt:1 , method-cnt:1) cost in 269 ms.
`---ts=2019-09-14 21:22:51;thread_name=http-nio-7744-exec-8;id=17;is_daemon=true;priority=5;TCCL=org.springframework.boot.loader.LaunchedURLClassLoader@20ad9418
`---[131.650285ms] org.apache.coyote.http11.Http11Processor:service()
+---[0.036851ms] org.apache.coyote.Request:getRequestProcessor() #667
+---[0.009986ms] org.apache.coyote.RequestInfo:setStage() #668
+---[0.008928ms] org.apache.coyote.http11.Http11Processor:setSocketWrapper() #671
+---[0.013236ms] org.apache.coyote.http11.Http11InputBuffer:init() #672
+---[0.00981ms] org.apache.coyote.http11.Http11OutputBuffer:init() #673
+---[min=0.00213ms,max=0.007317ms,total=0.009447ms,count=2] org.apache.coyote.http11.Http11Processor:getErrorState() #683
+---[min=0.002098ms,max=0.008888ms,total=0.010986ms,count=2] org.apache.coyote.ErrorState:isError() #683
+---[min=0.002448ms,max=0.007149ms,total=0.009597ms,count=2] org.apache.coyote.http11.Http11Processor:isAsync() #683
+---[min=0.002399ms,max=0.00852ms,total=0.010919ms,count=2] org.apache.tomcat.util.net.AbstractEndpoint:isPaused() #683
+---[min=0.033587ms,max=0.11832ms,total=0.151907ms,count=2] org.apache.coyote.http11.Http11InputBuffer:parseRequestLine() #687
+---[0.005384ms] org.apache.tomcat.util.net.AbstractEndpoint:isPaused() #695
+---[0.007924ms] org.apache.coyote.Request:getMimeHeaders() #702
+---[0.006744ms] org.apache.tomcat.util.net.AbstractEndpoint:getMaxHeaderCount() #702
+---[0.012574ms] org.apache.tomcat.util.http.MimeHeaders:setLimit() #702
+---[0.14319ms] org.apache.coyote.http11.Http11InputBuffer:parseHeaders() #703
+---[0.003997ms] org.apache.coyote.Request:getMimeHeaders() #743
+---[0.026561ms] org.apache.tomcat.util.http.MimeHeaders:values() #743
+---[min=0.002869ms,max=0.01203ms,total=0.014899ms,count=2] java.util.Enumeration:hasMoreElements() #745
+---[0.070114ms] java.util.Enumeration:nextElement() #746
+---[0.010921ms] java.lang.String:toLowerCase() #746
+---[0.008453ms] java.lang.String:contains() #746
+---[0.002698ms] org.apache.coyote.http11.Http11Processor:getErrorState() #775
+---[0.00307ms] org.apache.coyote.ErrorState:isError() #775
+---[0.002708ms] org.apache.coyote.RequestInfo:setStage() #777
+---[0.171139ms] org.apache.coyote.http11.Http11Processor:prepareRequest() #779
+---[0.009349ms] org.apache.tomcat.util.net.SocketWrapperBase:decrementKeepAlive() #794
+---[0.002574ms] org.apache.coyote.http11.Http11Processor:getErrorState() #800
+---[0.002696ms] org.apache.coyote.ErrorState:isError() #800
+---[0.002499ms] org.apache.coyote.RequestInfo:setStage() #802
+---[0.005641ms] org.apache.coyote.http11.Http11Processor:getAdapter() #803
+---[129.868916ms] org.apache.coyote.Adapter:service() #803
+---[0.003859ms] org.apache.coyote.http11.Http11Processor:getErrorState() #809
+---[0.002365ms] org.apache.coyote.ErrorState:isError() #809
+---[0.003844ms] org.apache.coyote.http11.Http11Processor:isAsync() #809
+---[0.002382ms] org.apache.coyote.Response:getStatus() #809
+---[0.002476ms] org.apache.coyote.http11.Http11Processor:statusDropsConnection() #809
+---[0.002284ms] org.apache.coyote.RequestInfo:setStage() #838
+---[0.00222ms] org.apache.coyote.http11.Http11Processor:isAsync() #839
+---[0.037873ms] org.apache.coyote.http11.Http11Processor:endRequest() #843
+---[0.002188ms] org.apache.coyote.RequestInfo:setStage() #845
+---[0.002112ms] org.apache.coyote.http11.Http11Processor:getErrorState() #849
+---[0.002063ms] org.apache.coyote.ErrorState:isError() #849
+---[0.002504ms] org.apache.coyote.http11.Http11Processor:isAsync() #853
+---[0.009808ms] org.apache.coyote.Request:updateCounters() #854
+---[0.002008ms] org.apache.coyote.http11.Http11Processor:getErrorState() #855
+---[0.002192ms] org.apache.coyote.ErrorState:isIoAllowed() #855
+---[0.01968ms] org.apache.coyote.http11.Http11InputBuffer:nextRequest() #856
+---[0.010065ms] org.apache.coyote.http11.Http11OutputBuffer:nextRequest() #857
+---[0.002576ms] org.apache.coyote.RequestInfo:setStage() #870
+---[0.016599ms] org.apache.coyote.http11.Http11Processor:processSendfile() #872
+---[0.008182ms] org.apache.coyote.http11.Http11InputBuffer:getParsingRequestLinePhase() #688
+---[0.0075ms] org.apache.coyote.http11.Http11Processor:handleIncompleteRequestLineRead() #690
+---[0.001979ms] org.apache.coyote.RequestInfo:setStage() #875
+---[0.001981ms] org.apache.coyote.http11.Http11Processor:getErrorState() #877
+---[0.001934ms] org.apache.coyote.ErrorState:isError() #877
+---[0.001995ms] org.apache.tomcat.util.net.AbstractEndpoint:isPaused() #877
+---[0.002403ms] org.apache.coyote.http11.Http11Processor:isAsync() #879
`---[0.006176ms] org.apache.coyote.http11.Http11Processor:isUpgrade() #881
[arthas@24851]$ trace org.apache.coyote.Adapter service
Press Q or Ctrl+C to abort.
Affect(class-cnt:1 , method-cnt:1) cost in 608 ms.
`---ts=2019-09-14 21:34:33;thread_name=http-nio-7744-exec-1;id=10;is_daemon=true;priority=5;TCCL=org.springframework.boot.loader.LaunchedURLClassLoader@20ad9418
`---[81.70999ms] org.apache.catalina.connector.CoyoteAdapter:service()
+---[0.032546ms] org.apache.coyote.Request:getNote() #302
+---[0.007148ms] org.apache.coyote.Response:getNote() #303
+---[0.007475ms] org.apache.catalina.connector.Connector:getXpoweredBy() #324
+---[0.00447ms] org.apache.coyote.Request:getRequestProcessor() #331
+---[0.007902ms] java.lang.ThreadLocal:get() #331
+---[0.006522ms] org.apache.coyote.RequestInfo:setWorkerThreadName() #331
+---[73.793798ms] org.apache.catalina.connector.CoyoteAdapter:postParseRequest() #336
+---[0.001536ms] org.apache.catalina.connector.Connector:getService() #339
+---[0.004469ms] org.apache.catalina.Service:getContainer() #339
+---[0.007074ms] org.apache.catalina.Engine:getPipeline() #339
+---[0.004334ms] org.apache.catalina.Pipeline:isAsyncSupported() #339
+---[0.002466ms] org.apache.catalina.connector.Request:setAsyncSupported() #339
+---[6.01E-4ms] org.apache.catalina.connector.Connector:getService() #342
+---[0.001859ms] org.apache.catalina.Service:getContainer() #342
+---[9.65E-4ms] org.apache.catalina.Engine:getPipeline() #342
+---[0.005231ms] org.apache.catalina.Pipeline:getFirst() #342
+---[7.239154ms] org.apache.catalina.Valve:invoke() #342
+---[0.006904ms] org.apache.catalina.connector.Request:isAsync() #345
+---[0.00509ms] org.apache.catalina.connector.Request:finishRequest() #372
+---[0.051461ms] org.apache.catalina.connector.Response:finishResponse() #373
+---[0.007244ms] java.util.concurrent.atomic.AtomicBoolean:<init>() #379
+---[0.007314ms] org.apache.coyote.Response:action() #380
+---[0.004518ms] org.apache.catalina.connector.Request:isAsyncCompleting() #382
+---[0.001072ms] org.apache.catalina.connector.Request:getContext() #394
+---[0.007166ms] java.lang.System:currentTimeMillis() #401
+---[0.004367ms] org.apache.coyote.Request:getStartTime() #401
+---[0.011483ms] org.apache.catalina.Context:logAccess() #401
+---[0.0014ms] org.apache.coyote.Request:getRequestProcessor() #406
+---[min=8.0E-4ms,max=9.22E-4ms,total=0.001722ms,count=2] java.lang.Integer:<init>() #406
+---[0.001082ms] java.lang.reflect.Method:invoke() #406
+---[0.001851ms] org.apache.coyote.RequestInfo:setWorkerThreadName() #406
+---[0.035805ms] org.apache.catalina.connector.Request:recycle() #410
`---[0.007849ms] org.apache.catalina.connector.Response:recycle() #411
[arthas@24851]$ trace org.apache.catalina.webresources.AbstractArchiveResourceSet getArchiveEntries
Press Q or Ctrl+C to abort.
Affect(class-cnt:4 , method-cnt:2) cost in 150 ms.
`---ts=2019-09-14 21:36:26;thread_name=http-nio-7744-exec-3;id=12;is_daemon=true;priority=5;TCCL=org.springframework.boot.loader.LaunchedURLClassLoader@20ad9418
`---[75.743681ms] org.apache.catalina.webresources.JarWarResourceSet:getArchiveEntries()
+---[0.025731ms] java.util.HashMap:<init>() #106
+---[0.097729ms] org.apache.catalina.webresources.JarWarResourceSet:openJarFile() #109
+---[0.091037ms] java.util.jar.JarFile:getJarEntry() #110
+---[0.096325ms] java.util.jar.JarFile:getInputStream() #111
+---[0.451916ms] org.apache.catalina.webresources.TomcatJarInputStream:<init>() #113
+---[min=0.001175ms,max=0.001176ms,total=0.002351ms,count=2] java.lang.Integer:<init>() #114
+---[0.00104ms] java.lang.reflect.Method:invoke() #114
+---[0.045105ms] org.apache.catalina.webresources.TomcatJarInputStream:getNextJarEntry() #114
+---[min=5.02E-4ms,max=0.008531ms,total=0.028864ms,count=31] java.util.jar.JarEntry:getName() #116
+---[min=5.39E-4ms,max=0.022805ms,total=0.054647ms,count=31] java.util.HashMap:put() #116
+---[min=0.004452ms,max=34.479307ms,total=74.206249ms,count=31] org.apache.catalina.webresources.TomcatJarInputStream:getNextJarEntry() #117
+---[0.018358ms] org.apache.catalina.webresources.TomcatJarInputStream:getManifest() #119
+---[0.006429ms] org.apache.catalina.webresources.JarWarResourceSet:setManifest() #120
+---[0.010904ms] org.apache.tomcat.util.compat.JreCompat:isJre9Available() #121
+---[0.003307ms] org.apache.catalina.webresources.TomcatJarInputStream:getMetaInfEntry() #133
+---[5.5E-4ms] java.util.jar.JarEntry:getName() #135
+---[6.42E-4ms] java.util.HashMap:put() #135
+---[0.001981ms] org.apache.catalina.webresources.TomcatJarInputStream:getManifestEntry() #137
+---[0.064484ms] org.apache.catalina.webresources.TomcatJarInputStream:close() #141
+---[0.007961ms] org.apache.catalina.webresources.JarWarResourceSet:closeJarFile() #151
`---[0.004643ms] java.io.InputStream:close() #155
+---[min=0.004452ms,max=34.479307ms,total=74.206249ms,count=31] org.apache.catalina.webresources.TomcatJarInputStream:getNextJarEntry() #117
[arthas@24851]$ trace org.apache.catalina.webresources.TomcatJarInputStream *
Press Q or Ctrl+C to abort.
Affect(class-cnt:1 , method-cnt:4) cost in 44 ms.
`---ts=2019-09-14 21:37:47;thread_name=http-nio-7744-exec-5;id=14;is_daemon=true;priority=5;TCCL=org.springframework.boot.loader.LaunchedURLClassLoader@20ad9418
`---[0.234952ms] org.apache.catalina.webresources.TomcatJarInputStream:createZipEntry()
+---[0.039455ms] java.util.jar.JarInputStream:createZipEntry() #43
`---[0.007827ms] java.lang.String:equals() #44
`---ts=2019-09-14 21:37:47;thread_name=http-nio-7744-exec-5;id=14;is_daemon=true;priority=5;TCCL=org.springframework.boot.loader.LaunchedURLClassLoader@20ad9418
`---[0.050222ms] org.apache.catalina.webresources.TomcatJarInputStream:createZipEntry()
+---[0.001889ms] java.util.jar.JarInputStream:createZipEntry() #43
`---[0.001643ms] java.lang.String:equals() #46
#这里一共31个trace日志,删减了剩下的
/**
* Creates a new <code>JarEntry</code> (<code>ZipEntry</code>) for the
* specified JAR file entry name. The manifest attributes of
* the specified JAR file entry name will be copied to the new
* <CODE>JarEntry</CODE>.
*
* @param name the name of the JAR/ZIP file entry
* @return the <code>JarEntry</code> object just created
*/
protected ZipEntry createZipEntry(String name) {
JarEntry e = new JarEntry(name);
if (man != null) {
e.attr = man.getAttributes(name);
}
return e;
}
让你能方便的观察到指定方法的调用情况。能观察到的范围为:返回值、抛出异常、入参,通过编写 OGNL 表达式进行对应变量的查看。
[arthas@24851]$ watch org.apache.catalina.webresources.TomcatJarInputStream createZipEntry "{params[0]}"
Press Q or Ctrl+C to abort.
Affect(class-cnt:1 , method-cnt:1) cost in 27 ms.
ts=2019-09-14 21:51:14; [cost=0.14547ms] result=@ArrayList[
@String[META-INF/],
]
ts=2019-09-14 21:51:14; [cost=0.048028ms] result=@ArrayList[
@String[META-INF/MANIFEST.MF],
]
ts=2019-09-14 21:51:14; [cost=0.046071ms] result=@ArrayList[
@String[META-INF/resources/],
]
ts=2019-09-14 21:51:14; [cost=0.033855ms] result=@ArrayList[
@String[META-INF/resources/swagger-ui.html],
]
ts=2019-09-14 21:51:14; [cost=0.039138ms] result=@ArrayList[
@String[META-INF/resources/webjars/],
]
ts=2019-09-14 21:51:14; [cost=0.033701ms] result=@ArrayList[
@String[META-INF/resources/webjars/springfox-swagger-ui/],
]
ts=2019-09-14 21:51:14; [cost=0.033644ms] result=@ArrayList[
@String[META-INF/resources/webjars/springfox-swagger-ui/favicon-16x16.png],
]
ts=2019-09-14 21:51:14; [cost=0.033976ms] result=@ArrayList[
@String[META-INF/resources/webjars/springfox-swagger-ui/springfox.css],
]
ts=2019-09-14 21:51:14; [cost=0.032818ms] result=@ArrayList[
@String[META-INF/resources/webjars/springfox-swagger-ui/swagger-ui-standalone-preset.js.map],
]
ts=2019-09-14 21:51:14; [cost=0.04651ms] result=@ArrayList[
@String[META-INF/resources/webjars/springfox-swagger-ui/swagger-ui.css],
]
ts=2019-09-14 21:51:14; [cost=0.034793ms] result=@ArrayList[
@String[META-INF/resources/webjars/springfox-swagger-ui/swagger-ui.js.map],
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.9.2</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.9.2</version>
</dependency>
# Tomcat embed Bug分析&解决
为什么每次请求会加载Jar包内的静态资源
为什么连续请求不会出现问题
为什么本地不会复现
如何解决
通过替换springboot pom properties方式
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<tomcat.version>8.5.40</tomcat.version>
</properties>